Law360 (January 26, 2005, 12:00 AM EST) -- NTP’s attorneys reacted angrily to Canada’s amicus curiae brief on behalf of BlackBerry maker Research in Motion in the closely watched patent lawsuit, a filing at the U.S. Court of Appeals for the Federal Circuit shows.

“The appearance of a foreign government in the U.S. courts to advocate the narrow economic interests of one of its corporate nationals should, for good reason, be discouraged,” NTP said in a filing on Monday.

“Otherwise, the U.S. courts would be swamped with filings by foreign governments in support of...